commit 67b35e5d01aba7a83f2161b0c90acb08afa01e3e
author Wu Zhangjin <wuzj@lemote.com> Thu Jul 02 23:25:46 2009 +0800
committer Ralf Baechle <ralf@linux-mips.org> Thu Sep 17 20:07:47 2009 +0200
tree b85665bc0611c07d26299c20424332cc8899133d
parent 92d1b63dbae0865bee5317ca6b65e0b304dc590d

MIPS: Loongson: Add oprofile support

This kernel support is needed by the user-space tool:oprofile to profile
linux kernel or applications via loongson2 performance counters. you can
enable this driver via CONFIG_OPROFILE = y or m.

On Loongson2 there are two performance counters, each one can count 16
events respectively. when anyone of the performance counter overflows, an
interrupt will be generated and is routed to the IRQ MIPS_CPU_IRQ_BASE + 6.

Signed-off-by: Yanhua <yanh@lemote.com>
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>